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datagrid分页从后端获取数据也很简单

2014-04-23 15:34 127 查看

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Datagrid.aspx.cs" Inherits="EasyUI.Datagrid" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>

<%-- <link href="Styles/jQuery/EasyUI/easyui.css" rel="stylesheet" type="text/css" />
<link href="Styles/jQuery/EasyUI/icon.css" rel="stylesheet" type="text/css" />

<script src="Scripts/jQuery/jquery.min.js" type="text/javascript"></script>
<script src="Scripts/jQuery/EasyUI/jquery.easyui.min.js" type="text/javascript"></script>--%>
<link href="../themes/icon.css" rel="stylesheet" />
<link href="../themes/default/easyui.css" rel="stylesheet" />
<link href="../src/demo.css" rel="stylesheet" />
<script src="../comjs/jquery-1.8.0.min.js"></script>
<script src="../comjs/jquery.easyui.min.js"></script>

<script type="text/javascript">
$(function () {
$dg = $("#dg");
$dg.datagrid({
url: "Data.ashx",
title: "DataGrid",
collapsible: true,
pageList: [4, 10, 15, 20],
pageSize: 4,
width: 500,
rownumber:true,
columns: [[
{ checkbox:true },
{ field: "mId", title: "MenuID", width: 100, align:"center" },
{ field: "mName", title: "MenuName", width: 100, align: "center" },
{ field: "mIsDel", title: "MenuIsDel", width: 100, align: "center" },
{ field: "mAddtime", title: "MenuAddtime", width: 100, align:"center" }

]],
pagination:true
});
});
</script>
</head>
<body>
<table id="dg"></table>
</body>
</html>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
//using System.ServiceModel.Web;
using System.Data;
using System.Data.SqlClient;

namespace EasyUI
{
/// <summary>
/// Data1 的摘要说明
/// </summary>
public class Data1 : IHttpHandler
{

public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "application/json";
// context.Response.ContentType = "text/plain";

string page = context.Request.Form["page"];
string rows = context.Request.Form["rows"];

int pageNum = int.Parse(page);
int pageSize = int.Parse(rows);

int total = 0;
string rs;

using (SqlConnection conn = new SqlConnection())
{
conn.ConnectionString = "Data Source=.;Initial Catalog=CompanyGZ;Integrated Security=True";

using (SqlCommand cmd = new SqlCommand())
{
string sql = "SELECT COUNT(*) FROM Menu;";
cmd.Connection = conn;
cmd.CommandText = sql;

conn.Open();
total = (int)cmd.ExecuteScalar();

sql = string.Format("SELECT TOP {0} mId, mName, mIsDel, mAddtime " +
"FROM Menu " +
"WHERE mId NOT IN (SELECT TOP {1} mId FROM Menu);",
pageSize, (pageNum - 1) * pageSize);
cmd.CommandText = sql;
using (SqlDataReader reader = cmd.ExecuteReader())
{
string rsRows = "";
while (reader.Read())
{
string tmpRs = string.Format("\"mId\":\"{0}\"," +
"\"mName\":\"{1}\"," +
"\"mIsDel\":\"{2}\"," +
"\"mAddtime\":\"{3}\"",
reader["mId"],
reader["mName"],
reader["mIsDel"],
reader["mAddtime"]);
rsRows += "{" + tmpRs + "},";
}
rsRows = rsRows.Substring(0, rsRows.Length - 1);

rsRows = "[" + rsRows + "]";

rs = string.Format("\"total\":\"{0}\"", total);
rs += ",\"rows\":" + rsRows;

rs = "{" + rs + "}";

context.Response.Write(rs);
}
}
}

// context.Response.Write(rs);
}

public bool IsReusable
{
get
{
return false;
}
}
}
}

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datagrid分页 从后端获取数据也很简单

datagrid分页从后端获取数据也很简单